Alan Cox 0d2e1c3e39 Clearing a page table entry's accessed bit (PG_A) and setting the ... page's PG_REFERENCED flag in pmap_protect() can't really be justified. In contrast to pmap_remove() or pmap_remove_all(), the mapping is not being destroyed, so the notion that the page was accessed is not lost. Moreover, clearing the page table entry's accessed bit and setting the page's PG_REFERENCED flag can throw off the page daemon's activity count calculation. Finally, in my tests, I found that 15% of the atomic memory operations being performed by pmap_protect() were only to clear PG_A, and not change protection. This could, by itself, be fixed, but I don't see the point given the above argument. Remove a comment from pmap_protect_pde() that is no longer meaningful after the above change.		2010-04-25 20:40:45 +00:00
..
apic_vector.s	Add a handler for the local APIC error interrupt. For now it just prints	2010-03-29 19:13:34 +00:00
atomic.c
atpic_vector.s	Introduce the new kernel sub-tree x86 which should contain all the code	2010-02-25 14:13:39 +00:00
autoconf.c
bios.c	MFp4:	2008-11-02 18:48:54 +00:00
bioscall.s
bpf_jit_machdep.c	If a conditional jump instruction has the same jt and jf, do not perform	2010-04-22 23:47:19 +00:00
bpf_jit_machdep.h	If a conditional jump instruction has the same jt and jf, do not perform	2010-04-22 23:47:19 +00:00
busdma_machdep.c	Reduce the number of bounce zones (and thus the number of bounce pages	2009-04-23 20:24:19 +00:00
db_disasm.c	Decode some more "exotic" instructions including: fxsave, fxrstor, ldmxcsr,	2008-08-11 20:19:42 +00:00
db_interface.c
db_trace.c	Frames created by the Xcpustop, Xrendezvous, Xipi_intr_bitmap_handler	2008-09-27 15:54:04 +00:00
dump_machdep.c	- revert pmap_kenter_temporary to taking a physical address	2009-12-10 03:09:35 +00:00
elan-mmcr.c	Update d_mmap() to accept vm_ooffset_t and vm_memattr_t.	2009-12-29 21:51:28 +00:00
elf_machdep.c	Make sure that the primary native brandinfo always gets added	2009-10-03 11:57:21 +00:00
exception.s	Introduce the new kernel sub-tree x86 which should contain all the code	2010-02-25 14:13:39 +00:00
gdb_machdep.c
genassym.c	Remove the old kernel RPC implementation and the NFS_LEGACYRPC option.	2009-06-30 19:03:27 +00:00
geode.c	Add support for PC Engines ALIX boards.	2008-02-10 19:14:42 +00:00
i686_mem.c	Enable MTRR on all VIA CPUs that claim support.	2010-01-31 14:35:49 +00:00
identcpu.c	Print out the family and model from the cpu_id. This is especially useful	2010-03-11 14:17:37 +00:00
in_cksum.c	Trim comments about the MP-safety of various bits of the amd64/i386	2009-03-09 13:11:16 +00:00
initcpu.c	- Style nits.	2009-11-12 03:31:19 +00:00
intr_machdep.c	Move intr_describe() out of #ifdef SMP; the function is always required.	2009-10-16 12:00:59 +00:00
io_apic.c	After the per-CPU IDT changes, the IDT vector of an interrupt could change	2009-07-06 18:23:00 +00:00
io.c	Use io(4) for I/O port access on ia64, rather than through sysarch(2).	2010-01-11 18:10:13 +00:00
k6_mem.c	Initial suspend/resume support for amd64.	2009-03-17 00:48:11 +00:00
legacy.c	Rework how the nexus(4) device works on x86 to better handle the idea of	2008-03-13 20:39:04 +00:00
local_apic.c	Rename the cyclic global variable lapic_cyclic_clock_func to just	2010-04-20 17:03:30 +00:00
locore.s	Simplify pmap_init(). Additionally, correct a harmless misbehavior on i386.	2010-01-11 16:01:20 +00:00
longrun.c	Introduce cpu_vendor_id and replace a lot of strcmp(cpu_vendor, "...").	2008-11-26 19:25:13 +00:00
machdep.c	Change printf() calls to uprintf() for sigreturn() and trap() complaints	2010-04-13 10:12:58 +00:00
mca.c	Adapt r204907 and r205402, the amd64 implementation of the workaround for	2010-03-24 03:07:35 +00:00
mem.c	Update d_mmap() to accept vm_ooffset_t and vm_memattr_t.	2009-12-29 21:51:28 +00:00
minidump_machdep.c	for PV XEN translate page table entries from machine (real) to physical (logical) addresses so that kgdb can	2009-12-10 07:48:47 +00:00
mp_clock.c	Despite several examples in the kernel, the third argument of	2007-06-04 18:25:08 +00:00
mp_machdep.c	Make NKPT a kernel option on i386 so that it can be set to a non-default	2010-03-10 19:50:52 +00:00
mp_watchdog.c	Add a new 'why' argument to kdb_enter(), and a set of constants to use	2007-12-25 17:52:02 +00:00
mpboot.s	Switch to our preferred 2-clause BSD license.	2010-04-07 18:26:13 +00:00
mptable_pci.c
mptable.c	In keeping with style(9)'s recommendations on macros, use a ';'	2008-03-16 10:58:09 +00:00
msi.c	add static qualifier to definition of a function already declared static	2010-01-29 10:20:11 +00:00
nexus.c	Introduce the new kernel sub-tree x86 which should contain all the code	2010-02-25 14:13:39 +00:00
perfmon.c
pmap.c	Clearing a page table entry's accessed bit (PG_A) and setting the	2010-04-25 20:40:45 +00:00
ptrace_machdep.c
stack_machdep.c	Remove duplicate $FreeBSD$ tag.	2007-12-02 21:07:49 +00:00
support.s	Integrate support for xen in to i386 common code.	2008-08-15 20:51:31 +00:00
swtch.s	Change some movl's to mov's. Newer GAS no longer accept 'movl' instructions	2009-01-31 11:37:21 +00:00
symbols.raw
sys_machdep.c	Replace AUDIT_ARG() with variable argument macros with a set more more	2009-06-27 13:58:44 +00:00
trap.c	Change printf() calls to uprintf() for sigreturn() and trap() complaints	2010-04-13 10:12:58 +00:00
tsc.c	Fix 'kern.timeconter.invariant_tsc' tunable and back out a redundant hack.	2008-10-21 04:31:07 +00:00
uio_machdep.c
vm86.c	Change the functions to ANSI in those cases where it breaks promotion	2009-02-24 18:09:31 +00:00
vm86bios.s
vm_machdep.c	Introduce the new kernel sub-tree x86 which should contain all the code	2010-02-25 14:13:39 +00:00